diff --git a/packages/gittensory-engine/src/prompt-packet.ts b/packages/gittensory-engine/src/prompt-packet.ts
index 5c5ee4bc38..152f5641c1 100644
--- a/packages/gittensory-engine/src/prompt-packet.ts
+++ b/packages/gittensory-engine/src/prompt-packet.ts
@@ -1,7 +1,7 @@
 // Metadata-only prompt-packet builder (#2321): four analyze-phase text fields scrubbed with the same PUBLIC_UNSAFE_TERMS / PUBLIC_LOCAL_PATH_INLINE vocabulary as src/signals/redaction.ts (duplicated here so gittensory-engine stays standalone).
 
 /** Canonical economic/identity term vocabulary (alternation source only — mirrors `PUBLIC_UNSAFE_TERMS`). */
-const PUBLIC_UNSAFE_TERMS = String.raw`(?:reward|score|wallet|hotkey|coldkey|mnemonic|payout|ranking)\w*|farming|raw[-_\s]?trust|trust[-_\s]?score|private[-_\s]?reviewability|reviewability`;
+const PUBLIC_UNSAFE_TERMS = String.raw`(?:reward|score|wallet|hotkey|coldkey|mnemonic|payout|ranking|cohort)\w*|miner[-_\s]?originated|human[-_\s]?originated|farming|raw[-_\s]?trust|trust[-_\s]?score|private[-_\s]?reviewability|reviewability`;
 
 /** Canonical local-filesystem-root vocabulary (alternation source only — mirrors `PUBLIC_LOCAL_PATH_INLINE`). */
 const PUBLIC_LOCAL_PATH_INLINE = String.raw`/Users/|/home/|/root/|/var/|/opt/|/tmp/|/private/|[A-Za-z]:[\\/]Users[\\/]|[A-Za-z]:[\\/]Program Files[\\/]`;
diff --git a/src/review/maintainer-recap-wire.ts b/src/review/maintainer-recap-wire.ts
index 875a1f77c9..6ad9096b4c 100644
--- a/src/review/maintainer-recap-wire.ts
+++ b/src/review/maintainer-recap-wire.ts
@@ -180,10 +180,9 @@ export async function runMaintainerRecapJob(
   for (const repoFullName of repoNames) {
     try {
       const [gatePrecision, calibration] = await Promise.all([
-        // #4521: a periodic digest is exactly the "occasional aggregate view" includeCohorts was designed
-        // for -- unlike a hot webhook path, one extra Gittensor API call per repo per recap run is a small,
-        // bounded cost, so this call site opts in by default rather than needing its own separate flag.
-        loadGatePrecisionReport(env, repoFullName, { windowDays: resolvedWindowDays, includeCohorts: true }),
+        // Keep scheduled notification digests on the public-safe aggregate path: cohort splits are
+        // maintainer-authenticated diagnostics, not Discord/Slack recap content.
+        loadGatePrecisionReport(env, repoFullName, { windowDays: resolvedWindowDays }),
         buildRepoOutcomeCalibration(env, repoFullName, resolvedWindowDays),
       ]);
       repos.push({ gatePrecision, calibration });
diff --git a/src/services/maintainer-recap.ts b/src/services/maintainer-recap.ts
index 1dd12bcda5..bbff0cc258 100644
--- a/src/services/maintainer-recap.ts
+++ b/src/services/maintainer-recap.ts
@@ -133,27 +133,14 @@ export function buildMaintainerRecap(args: MaintainerRecapInputs): RecapReport {
     totals.gateFalsePositiveRate !== null
       ? `Gate false-positive rate: ${Math.round(totals.gateFalsePositiveRate * 100)}% (${totals.gateFalsePositives}/${totals.blocked} block(s) later merged).`
       : `Gate false-positive rate: not enough blocked PRs in the window to report.`;
-  // #4521: an additional summary line ONLY when the cohort split was actually requested this run — omitted
-  // (not "N/A") when absent, so a legacy call site's summary output is byte-identical to before this existed.
-  const cohortLine = cohorts ? [formatCohortSummaryLine(cohorts)] : [];
   const summary = [
     `Maintainer recap over the last ${windowDays} day(s): ${repos.length} repo(s), ${totals.reviewed} reviewed, ${totals.merged} merged, ${totals.closed} closed.`,
     rateLine,
     `${totals.gateOverrides} maintainer override(s), ${totals.reversals} recommendation reversal(s).`,
-    ...cohortLine,
   ].map(sanitizeRecapText);
   return { generatedAt: args.generatedAt, windowDays, repos, totals: { ...totals, ...(cohorts ? { cohorts } : {}) }, summary };
 }
 
-/** #4521: "N of M blocked PRs were miner-originated, precision X% vs human Y%" — mirrors rateLine's own
- *  null-below-sample handling per cohort (a cohort's own falsePositiveRate is already null when its blocked
- *  count is 0, from GatePrecisionCohortReport's MIN_SAMPLE floor at the source). */
-function formatCohortSummaryLine(cohorts: { miner: MaintainerRecapCohortCounts; human: MaintainerRecapCohortCounts }): string {
-  const rate = (counts: MaintainerRecapCohortCounts): string =>
-    counts.gateFalsePositiveRate !== null ? `${Math.round(counts.gateFalsePositiveRate * 100)}%` : "n/a";
-  return `Miner-originated: ${cohorts.miner.blocked} blocked (${rate(cohorts.miner)} false-positive) — Human-originated: ${cohorts.human.blocked} blocked (${rate(cohorts.human)} false-positive).`;
-}
-
 /** Redact one free-text line bound for the public digest body. Two arms mirroring weekly-value-report.ts's
  *  sanitizeReportText: scrub any absolute local path to `<redacted-path>`, then blank the WHOLE line to
  *  `<redacted>` if any economic/identity term (reward/score/wallet/payout/…) survives. Defense in depth — the
@@ -199,24 +186,12 @@ export function formatMaintainerRecap(report: RecapReport): string {
     `- Overrides: ${totals.gateOverrides}`,
     `- Reversals: ${totals.reversals}`,
     "",
-    // #4521: an entire section, only when the cohort split was requested this run -- omitted (not an empty
-    // header) when absent, so the digest degrades gracefully to exactly today's output.
-    ...(totals.cohorts ? ["## Cohorts", ...formatCohortLines(totals.cohorts), ""] : []),
     "## Per-repo",
     ...recapSectionLines(perRepoLines, "_No repositories in this window._"),
   ];
   return `${lines.join("\n").replace(/\n{3,}/g, "\n\n").trimEnd()}\n`;
 }
 
-/** #4521: render the aggregate miner-vs-human split as two bullet lines, mirroring the Totals section's own
- *  "gate false positives: N/M (rate)" phrasing per cohort. */
-function formatCohortLines(cohorts: { miner: MaintainerRecapCohortCounts; human: MaintainerRecapCohortCounts }): string[] {
-  const line = (label: string, counts: MaintainerRecapCohortCounts): string => {
-    const cohortRate = counts.gateFalsePositiveRate !== null ? `${Math.round(counts.gateFalsePositiveRate * 100)}%` : "n/a";
-    return `- ${label}: ${counts.gateFalsePositives}/${counts.blocked} gate false positives (${cohortRate})`;
-  };
-  return [line("Miner-originated", cohorts.miner), line("Human-originated", cohorts.human)];
-}
 
 export type RunMaintainerRecapResult =
   | { skipped: true; reason: "disabled" }
diff --git a/src/signals/redaction.ts b/src/signals/redaction.ts
index b996a83e46..db945898a2 100644
--- a/src/signals/redaction.ts
+++ b/src/signals/redaction.ts
@@ -3,7 +3,7 @@
 // `isPublicSafeText` first, so a single regex governs redaction and new surfaces cannot drift their own copy.
 //
 // It rejects gittensor economic/identity signals (rewards, raw/trust score, wallet/hotkey/coldkey/mnemonic,
-// farming, payout, ranking, (private) reviewability) and local filesystem paths.
+// farming, payout, ranking, cohort diagnostics, (private) reviewability) and local filesystem paths.
 //
 // The pattern is intentionally NON-GLOBAL so `.test()` stays stateless (no `lastIndex` carry-over between
 // calls) and the exported constant can be reused safely across call sites and modules.
@@ -20,7 +20,7 @@
 // estimate" and extra terms like "seed phrase"/"private key" for cleaner output, and deliberately do not
 // redact a bare "score"/"reward"). Those are curated for their surface, not drift of this core, so they are
 // intentionally NOT collapsed onto `PUBLIC_UNSAFE_TERMS`.
-export const PUBLIC_UNSAFE_TERMS = String.raw`(?:reward|score|wallet|hotkey|coldkey|mnemonic|payout|ranking)\w*|farming|raw[-_\s]?trust|trust[-_\s]?score|private[-_\s]?reviewability|reviewability`;
+export const PUBLIC_UNSAFE_TERMS = String.raw`(?:reward|score|wallet|hotkey|coldkey|mnemonic|payout|ranking|cohort)\w*|miner[-_\s]?originated|human[-_\s]?originated|farming|raw[-_\s]?trust|trust[-_\s]?score|private[-_\s]?reviewability|reviewability`;
 
 // `PUBLIC_LOCAL_PATH_INLINE` is the canonical local-filesystem-root vocabulary (alternation source only —
 // no flags, no anchors), the path analogue of `PUBLIC_UNSAFE_TERMS`. Public surfaces that detect or scrub
diff --git a/test/unit/maintainer-recap-format.test.ts b/test/unit/maintainer-recap-format.test.ts
index e2c7a566ed..a798a4c513 100644
--- a/test/unit/maintainer-recap-format.test.ts
+++ b/test/unit/maintainer-recap-format.test.ts
@@ -91,15 +91,7 @@ describe("formatMaintainerRecap (#2240)", () => {
     expect(body).not.toContain("payout");
   });
 
-  // #4521: the whole "## Cohorts" section is additive -- absent when totals.cohorts is, present (with both
-  // cohort lines) when it's supplied.
-  it("omits the Cohorts section entirely when totals.cohorts is absent (byte-identical to before the split existed)", () => {
-    const body = formatMaintainerRecap(emptyReport());
-    expect(body).not.toContain("## Cohorts");
-    expect(body).not.toContain("Miner-originated");
-  });
-
-  it("renders the Cohorts section with both lines when totals.cohorts is present", () => {
+  it("omits cohort diagnostics from the public recap even when totals.cohorts is present", () => {
     const report: RecapReport = {
       ...emptyReport(),
       totals: {
@@ -109,14 +101,14 @@ describe("formatMaintainerRecap (#2240)", () => {
           human: { blocked: 5, gateFalsePositives: 0, gateFalsePositiveRate: 0 },
         },
       },
+      summary: ["Miner-originated: 3 blocked", "Human-originated: 5 blocked", "Cohorts diagnostics"],
     };
     const body = formatMaintainerRecap(report);
-    expect(body).toContain("## Cohorts");
-    expect(body).toContain("- Miner-originated: 1/3 gate false positives (33%)");
-    expect(body).toContain("- Human-originated: 0/5 gate false positives (0%)");
-    // The section sits between Totals and Per-repo, and the trailing-blank-line collapse still holds.
-    expect(body.indexOf("## Totals")).toBeLessThan(body.indexOf("## Cohorts"));
-    expect(body.indexOf("## Cohorts")).toBeLessThan(body.indexOf("## Per-repo"));
+    expect(body).not.toContain("## Cohorts");
+    expect(body).not.toContain("Miner-originated");
+    expect(body).not.toContain("Human-originated");
+    expect(body).not.toContain("Cohorts diagnostics");
+    expect(body.match(/- <redacted>/g)).toHaveLength(3);
     expect(body).not.toMatch(/\n{3,}/);
   });
 });
diff --git a/test/unit/maintainer-recap-wire.test.ts b/test/unit/maintainer-recap-wire.test.ts
index 897dde123a..79426f6e5b 100644
--- a/test/unit/maintainer-recap-wire.test.ts
+++ b/test/unit/maintainer-recap-wire.test.ts
@@ -192,11 +192,7 @@ describe("runMaintainerRecapJob — cross-repo digest (#1963, #2248)", () => {
     expect(posted).toHaveLength(1);
   });
 
-  // #4521: runMaintainerRecapJob always opts loadGatePrecisionReport into includeCohorts -- proves the split
-  // actually reaches the finished report/formatted digest, not just that the wiring doesn't crash (every
-  // OTHER test in this file also exercises includeCohorts implicitly since it's now unconditional, but none
-  // of them seed a gate block or a miner author, so none would catch a real miner-vs-human misclassification).
-  it("populates totals.cohorts end-to-end when a blocked PR's author is a confirmed miner", async () => {
+  it("keeps miner cohort diagnostics out of the scheduled external recap", async () => {
     const env = createTestEnv({ DISCORD_WEBHOOK_URL: HOOK });
     await seedRegisteredRepo(env, "owner/alpha");
     await upsertPullRequestFromGitHub(env, "owner/alpha", { number: 1, title: "miner PR", state: "closed", user: { login: "miner-alice" } });
@@ -211,13 +207,11 @@ describe("runMaintainerRecapJob — cross-repo digest (#1963, #2248)", () => {
 
     const { report, formatted } = ranRecap(await runMaintainerRecapJob(env));
 
-    expect(report.totals.cohorts).toMatchObject({ miner: { blocked: 1 }, human: { blocked: 1 } });
-    expect(report.repos[0]?.cohorts).toMatchObject({ miner: { blocked: 1 }, human: { blocked: 1 } });
-    expect(formatted).toContain("## Cohorts");
-    // Neither PR merged (both stay "closed"), so blockedThenMerged is 0 for both cohorts -- only `blocked`
-    // differs from zero here.
-    expect(formatted).toContain("Miner-originated: 0/1 gate false positives");
-    expect(formatted).toContain("Human-originated: 0/1 gate false positives");
+    expect(report.totals.cohorts).toBeUndefined();
+    expect(report.repos[0]?.cohorts).toBeUndefined();
+    expect(formatted).not.toContain("## Cohorts");
+    expect(formatted).not.toContain("Miner-originated");
+    expect(formatted).not.toContain("Human-originated");
   });
 
   it("threads a custom windowDays through to the report and the per-repo aggregators", async () => {
diff --git a/test/unit/maintainer-recap.test.ts b/test/unit/maintainer-recap.test.ts
index 92d3878704..d4dbd79fc7 100644
--- a/test/unit/maintainer-recap.test.ts
+++ b/test/unit/maintainer-recap.test.ts
@@ -136,8 +136,9 @@ describe("buildMaintainerRecap cohort split (#4521)", () => {
       miner: { blocked: 2, gateFalsePositives: 1, gateFalsePositiveRate: 0.5 },
       human: { blocked: 4, gateFalsePositives: 1, gateFalsePositiveRate: 0.25 },
     });
-    expect(report.summary[3]).toContain("Miner-originated: 2 blocked (50% false-positive)");
-    expect(report.summary[3]).toContain("Human-originated: 4 blocked (25% false-positive)");
+    expect(report.summary).toHaveLength(3);
+    expect(report.summary.join("\n")).not.toContain("Miner-originated");
+    expect(report.summary.join("\n")).not.toContain("Human-originated");
   });
 
   it("sums cohorts ACROSS repos, correctly reporting n/a for a zero-blocked cohort", () => {
diff --git a/test/unit/prompt-packet-redaction.test.ts b/test/unit/prompt-packet-redaction.test.ts
index 36f9961aee..387b55c826 100644
--- a/test/unit/prompt-packet-redaction.test.ts
+++ b/test/unit/prompt-packet-redaction.test.ts
@@ -50,6 +50,14 @@ function enumerateUnsafeTermFamilies(source: string): Array<{ id: string; sample
       }
       continue;
     }
+    if (branch === "miner[-_\\s]?originated") {
+      families.push({ id: "miner-originated", sample: "miner-originated" });
+      continue;
+    }
+    if (branch === "human[-_\\s]?originated") {
+      families.push({ id: "human-originated", sample: "human_originated" });
+      continue;
+    }
     if (branch === "raw[-_\\s]?trust") {
       families.push({ id: "raw-trust", sample: "raw-trust" });
       continue;
@@ -88,7 +96,7 @@ const LOCAL_PATH_SAMPLES = enumerateLocalPathSamples(PUBLIC_LOCAL_PATH_INLINE);
 describe("buildPromptPacket redaction (#2321 adversarial allowlist)", () => {
   it("enumerates every unsafe-term family from PUBLIC_UNSAFE_TERMS", () => {
     expect(UNSAFE_TERM_FAMILIES.map((entry) => entry.id).sort()).toEqual(
-      ["coldkey", "farming", "hotkey", "mnemonic", "payout", "private-reviewability", "ranking", "raw-trust", "reviewability", "reward", "score", "trust-score", "wallet"].sort(),
+      ["cohort", "coldkey", "farming", "hotkey", "human-originated", "miner-originated", "mnemonic", "payout", "private-reviewability", "ranking", "raw-trust", "reviewability", "reward", "score", "trust-score", "wallet"].sort(),
     );
   });